bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping

[Juanma Barranquero <lekktu@gmail.com>]

Package: emacs
Version: 24.1.50


With current trunk (revno:108308) bootstrapping on Windows throws an
error while building custom-deps:

  make -w cus-load.el-CMD
  make[2]: Entering directory `C:/emacs/debug/lisp'
  echo ;;; cus-load.el --- automatically extracted custom
dependencies> cus-load.el-CMD
  echo ;;>> cus-load.el-CMD
  echo ;;; Code:>> cus-load.el-CMD
  echo.\f>> cus-load.el-CMD
  echo ;; Local Variables:>> cus-load.el-CMD
  echo ;; version-control: never>> cus-load.el-CMD
  echo ;; no-byte-compile: t>> cus-load.el-CMD
  echo ;; no-update-autoloads: t>> cus-load.el-CMD
  echo ;; End:>> cus-load.el-CMD
  make[2]: Leaving directory `C:/emacs/debug/lisp'
  mv cus-load.el-CMD C:/emacs/debug/lisp/cus-load.el
  Directories: calc calendar emacs-lisp emulation erc eshell gnus
international language mail mh-e net nxml org play progmodes textmodes
url vc cedet ce
  "../src/oo/i386/emacs.exe" -batch --no-site-file --no-site-lisp -l
cus-dep --eval "(setq find-file-hook nil)" \
                    -f custom-make-dependencies
C:/Devel/emacs/repo/debug/lisp calc calendar emacs-lisp emulation erc
eshell gnus international language
  Directory C:/emacs/debug/lisp
  Directory calc
  Directory calendar
  Directory emacs-lisp
  Directory emulation
  Directory erc
  Directory eshell
  Directory gnus
  Directory international
  Directory language
  Wrong type argument: characterp, 4195283
  make[1]: [custom-deps] Error -1 (ignored)
  rm "../src/oo/i386/emacs.exe"

After bootstraping,

  cd lisp
  make custom-deps

works as expected.

The error appeared somewhere in the past ten days or so (I have a
bootstrap log from 2012-05-08 which does not show the problem).

    Juanma